JP7414652B2 - Vacuum cleaner dust collector and vacuum cleaner equipped with it - Google Patents

Description

The present invention relates to a dust collector for a vacuum cleaner and a vacuum cleaner equipped with the same.

Conventional vacuum cleaners include a cyclone-type vacuum cleaner that has a suction device with a built-in electric blower and a dust collector that is detachably attached to the suction device and exposed to the outside to collect dust. It is publicly known (for example, Patent Document 1).

Japanese Patent Application Publication No. 2016-067614

Conventional vacuum cleaners of this type are configured so that dust swirls and is centrifuged within the dust collection container of the dust collector, and at this time, wind noise is generated inside the dust collection container. It was hoped that this would be suppressed.
An object of the present invention is to provide a dust collector for a vacuum cleaner and a vacuum cleaner equipped with the same, which have been made in consideration of the above circumstances.

According to the present invention, there is provided a dust collecting device that is detachably attached to a suction device that sucks dust and captures the sucked dust,
It has a dust cup and a dust separation part that is detachable from the dust cup,
The dust cup has a dust collecting container section that collects the sent dust, and an outer container section provided on the outer peripheral side of the dust collecting container section,
The dust sent into the dust collection container section is separated from air by the dust separation section, and the air from which the dust has been removed is sent to the suction device, and the air in the outer container section of the dust cup is sent to the suction device. A vacuum cleaner dust collection device is provided that is configured to transport dust.
Further, according to the present invention, there is provided a vacuum cleaner including a suction device that sucks dust, and the dust collector that is detachably attached to the suction device.

According to the present invention, the dust collector can be made quieter during cleaning.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows 1st Embodiment of the vacuum cleaner of this invention. FIG. 1 is a perspective view showing the appearance of the dust collector of the first embodiment. 3 is a longitudinal sectional view of the dust collector of FIG. 2. FIG. 3 is a longitudinal sectional view of a dust cup of the dust collector of FIG. 2. FIG. FIG. 3 is a vertical cross-sectional view of the dust separation section of the dust collector of FIG. 2; It is a left sectional view of the vacuum cleaner of a 2nd embodiment. It is a perspective view showing the appearance of a dust collection device of a 2nd embodiment. 8 is a longitudinal sectional view of the dust collector of FIG. 7. FIG.

Hereinafter, the present invention will be explained in further detail using the drawings. Note that the following description is illustrative in all respects and should not be construed as limiting the invention.

(First embodiment)
FIG. 1 is a configuration diagram showing a first embodiment of a vacuum cleaner of the present invention. In addition, in FIG. 1, arrows indicate the front-rear, up-down directions as seen from the user using the vacuum cleaner 1, and the direction perpendicular to these front-rear, up-down directions (the direction perpendicular to the plane of the paper in FIG. 1) is the left-right direction. The configuration of the vacuum cleaner 1 will be explained based on these front pseudo left, right, up and down directions.
As shown in FIG. 1, this vacuum cleaner 1 is a cyclone-type canister-type vacuum cleaner equipped with a suction device 10 that sucks dust and a dust collector 50 that is detachably attached to the suction device 10. be.

The suction device 10 includes a housing 11 having wheels, an electric blower 12 provided at the front inside the housing 11, and a cord reel 13 provided at the rear.
The casing 11 includes a connecting part 11a provided at the front end to be detachably connected to the flexible hose 21, and a placing part 11b provided at an intermediate position between the front and rear so that the dust collector 50 is placed thereon. , an electric blower storage section 11c provided in front of the placement section 11b to accommodate the electric blower 12, and a cord reel storage section 11d provided behind the placement section 11b to accommodate the cord reel 13. , and an exhaust port 11e provided behind the cord reel storage section 11d. Furthermore, the housing 11 has windows (not shown) on the left and right sides that expose to the outside a dust cup 51 (see FIG. 2), which will be described later, of the dust collector 50 placed on the placement portion 11b. In addition, the mounting part 11b may be arranged in front of the electric blower storage part 11c.

Inside the housing 11, the connecting portion 11a and the placing portion 11b communicate with each other, the placing portion 11b and the electric blower storage portion 11c communicate with each other, and the electric blower storage portion 11c and the cord reel storage portion 11d communicate with each other. , the cord reel storage section 11d and the exhaust port 11e communicate with each other, thereby forming a ventilation path.
The thick arrows in FIG. 1 indicate the flow of air, and when the electric blower 12 is driven to collect dust, the dust-containing air that has flowed into the connecting portion 11a is transferred to the dust collector 50 placed on the placing portion 11b. The dust is sent into the dust collector 50 and captured in the dust collector 50. The air from which dust has been removed passes through the electric blower 12 and the cord reel 13 and is discharged to the outside from the exhaust port 11e.

<About the dust collector>
FIG. 2 is a perspective view showing the appearance of the dust collector of the first embodiment, and FIG. 3 is a longitudinal sectional view of the dust collector of FIG. 2. 4 is a vertical cross-sectional view of the dust cup of the dust collector shown in FIG. 2, and FIG. 5 is a vertical cross-sectional view of the dust separating section of the dust collector shown in FIG.
As shown in FIGS. 1 to 5, the dust collector 50 includes a dust cup 51 and a dust separating section 52 that is detachable from the dust cup 51.
The dust cup 51 includes a dust collecting container section 51a that collects the sent dust, and an outer container section 51b provided on the outer peripheral side of the dust collecting container section 51a.
This dust collector 50 separates the dust sent into the dust collection container section 51a from air by a dust separation section 52, sends the air from which the dust has been removed to the suction device 10, and also It is configured to send the air within 51b to the suction device 10. Specifically, dust is separated in the upper part of the dust collecting container part 51a of the dust cup 51, and the separated dust accumulates in the lower part of the dust collecting container part 51a.

As shown in FIGS. 2 to 4, the dust cup 51 has a cylindrical inner wall 51wi that constitutes the dust collecting container section 51a, and a cylindrical outer wall 51wo that constitutes the outer container section 51b together with the inner wall 51wi. It has a double wall structure, and has a bottom wall 51c that becomes the bottom of the dust collecting container section 51a and the outer container section 51b. That is, in the dust cup 51, the dust collecting container part 51a is constituted by the inner wall 51wi and the bottom wall 51c (excluding the outer peripheral part), and the outer container part 51b is constituted by the inner wall 51wi, the outer wall 51wo, and the outer peripheral part of the bottom wall 51c. It is configured.
In addition, in this embodiment, the bottom wall 51c of the dust cup 51 is integral with the dust collecting container part 51a and the outer container part 51b, but the bottom wall 51c is separate from the dust collecting container part 51a and the outer container part 51b. It may be composed of members.

In the dust cup 51, an annular inner receiving part 51ab with an enlarged diameter and an L-shaped longitudinal section is provided at the end of the inner wall 51wi opposite to the bottom wall 51c. The end protruding to the opposite side from 51c is the open end 51ac of the dust collecting container portion 51a.
In the dust cup 51, an annular outer receiving part 51bb with an enlarged diameter and an L-shaped longitudinal section is provided at the end of the outer wall 51wo opposite to the bottom wall 51c, and the bottom wall of the outer receiving part 51bb The end protruding to the opposite side from 51c is the open end 51bc of the outer container portion 51b.

In the case of this embodiment, the height of the outer receiving portion 51bb on the outer wall 51wo side is slightly higher than the height of the open end portion 51ac on the inner wall 51wi side. As a result, an annular gap S1 is formed between the outer wall 51wo and the opening end 51ac of the inner wall 51wi, which is narrower than the width W of the outer container portion 51b (the distance between the inner wall 51wi and the outer wall 51ab). This gap S1 serves as an outlet through which the air inside the outer container portion 51b escapes.

Further, a hook lever 53 for locking the attached state of the dust separation section 52 attached to the dust cup 51 is provided on the outer peripheral surface of the outer wall 51ab, and an inflow port 51x is provided at a position adjacent to the hook lever 53. (See Figure 2). This inflow port 51x serves as an entrance of an inflow path that passes through the outer wall 51wo and the inner wall 51wi and communicates with the inside of the dust collection container portion 51a.
Further, a positioning convex portion 51ca for positioning an inner cylindrical portion 52b, which will be described later, of the dust separation portion 52 is provided at the center of the inner surface of the bottom wall 51c.

As shown in FIGS. 3 and 5, the dust separation section 52 includes a cup section 52a that is fitted into the opening of the dust collection container section 51a and the opening of the outer container section 51b of the dust cup 51, and a bottom section of the cup section 52a. The inner cylindrical portion 52b is removably coupled, the filter portion 52c is removably attached to the opening on the opposite side of the bottom of the cup portion 52a, and the filter portion 52c is removably attached to the filter portion 52c so as to cover the filter portion 52c. It includes a cover portion 52d to be attached and a dust removal mechanism 52e for removing dust attached to the filter portion 52c.

The cup portion 52a is formed into a cylindrical shape with an outer peripheral side of the bottom inclined in a mortar shape and a hole 52aa provided in the center of the bottom.
The cup portion 52a also includes an annular inner packing 52ab provided on the outer surface of the inclined outer circumferential side of the bottom portion, and an annular outer packing 52ab provided on the outer surface of the outer circumferential portion so as to be located outside the inner packing 52ab. It has a packing 52ac and an annular receiving part 52ad with an enlarged diameter and an L-shaped longitudinal section, which is provided at the end of the outer periphery opposite to the bottom part.

Furthermore, the cup portion 52a has a through-hole-shaped communicating path 52ae provided at one or more locations between the inner packing 52ab and the outer packing 52ac in the outer peripheral portion. This communication path 52ae is connected to a ventilation path (inside the cup part 52a) in the dust separation part 52 through which air flows through the dust collection container part 51a of the dust cup 51, and an inside of the outer container part 51b of the dust cup 51. communicate with.

The inner cylindrical portion 52b includes a cylindrical frame portion 52ba whose one end side is removably connected to the periphery of the hole 52aa at the bottom of the cup portion 52a, and a mesh portion (not shown) wrapped around the cylindrical frame portion 52ba. , a large-diameter flange portion 52bb that is detachably coupled to the other end of the cylindrical frame portion 52ba, and a small-diameter cylindrical portion 52bc that is integrally connected to the large-diameter flange portion 52bb, and the inside of the inner cylinder portion 52b is It communicates with the inside of the cup portion 52a.

When the cup part 52a of the dust separation part 52 is fitted into the dust cup 51, the inner packing 52ab and the outer packing 52ac of the cup part 52a are in contact with and supported by the inner receiving part 51ab and the outer receiving part 51bb of the dust cup 51. (See Figure 3). Thereby, the space between the dust cup 51 and the cup portion 52a is isolated from the outside air. In addition, the small diameter cylindrical portion 52bc of the inner cylindrical portion 52b of the dust separation section 52 is fitted into the positioning convex portion 51ca of the dust cup 51 for positioning.

The filter portion 52c is formed into a circular shape so as to be fitted into the cup portion 52a, and includes a pleated filter body 52ca and an annular packing 52cb provided around the filter body 52ca.
In a state where the filter part 52c is fitted into the cup part 52a, the packing 52cb of the filter part 52c abuts and is supported by the receiving part 52ad of the cup part 52a (see FIGS. 3 and 5). Thereby, the space between the cup portion 52a and the filter portion 52c is isolated from outside air.
Further, a through hole through which a shaft 52ea (described later) of the dust removal mechanism 52e is inserted is formed at the center of the filter body 52ca.

The dust removal mechanism 52e includes the shaft 52ea rotatably inserted through the through hole of the filter body 52ca, a wiper 52eb provided at one end of the shaft 52ea on the cup portion 52a side, and a wiper 52eb provided at the other end of the shaft 52ea. 1 gear 52ec, a frame 52ed connected to the first gear 52ec, and a plurality of sliding contact members 52ee provided on the frame 52ed so as to be able to slide on the filter main body 52ca. Further, the dust removal mechanism 52e includes a lever 52ef rotatably attached to a cover portion 52d, which will be described later, and a second gear 52eg provided on the lever 52ef so as to mesh with the first gear 52ec.

The cover portion 52d includes a cover main body 52da having an exhaust port 52daa for discharging air, a handle 52db swingably provided on the cover main body 52da, and a lock claw (not shown) provided on the handle 52db. In addition, when the dust collector 50 is mounted on the mounting section 11b of the suction device 10, the lock claw locks into a locking recess (not shown) provided in the mounting section 11b to lock the mounted state. do. Moreover, when the handle 52db is pulled up and swung when the dust collector 50 is removed from the suction device 10, the lock claw is released from the locking recess.

The cover main body 52da has a rib 52dab that comes into contact with the packing 52cb when the cover part 52d is attached to the filter part 52c, thereby blocking the space between the filter part 52c and the cover part 52d from the outside air.

By attaching the cover portion 52d to the filter portion 52c, the second gear 52eg of the dust removal mechanism 52e meshes with the first gear 52ec. In this state, dust removal from the filter main body 52ca is performed by rotating the lever 52ef in a reciprocating direction about the shaft 52ea. Note that this will be described in detail later.

The dust collector 50 configured in this manner has a negative pressure inside the dust collector 50 during the dust collection described in FIGS. 1 and 3, and collects the dust from the inlet 51x (see FIG. 2) of the dust cup 51. Air containing dust flows into the dust container section 51a. A part of the relatively large first dust swirls inside the dust collection container part 51a, and the remaining first dust is captured by the mesh part on the outer periphery of the inner cylinder part 52b. The second dust, which is smaller than the first dust, passes through the mesh portion together with air and flows into the cup portion 52a from the inner cylinder portion 52b, and the second dust is captured by the filter body 52ca. The air from which the second dust has been removed passes through the filter body 52ca, flows into the ventilation path in the suction device 10 from the cover part 52d, passes through the electric blower 12 and cord reel 13, and is discharged to the outside from the exhaust port 11e. be done.

During such dust collection, the air in the outer container portion 51b of the dust cup 51 passes through the communication path 52ae of the cup portion 52a of the dust separation portion 52 from the gap S1 into the cup portion 52a, which is a part of the ventilation path. , passes through the filter body 52ca, passes through the ventilation path in the suction device 10, and is discharged to the outside. As a result, the inside of the outer container portion 51b of the dust cup 51 has a pressure lower than atmospheric pressure (a pressure close to vacuum). In other words, a low pressure layer (near vacuum layer) is formed within the outer container portion 51b.

Therefore, even if wind noise is generated within the dust collection container portion 51a of the dust cup 51 during dust collection, the low pressure layer acts as a sound insulating layer, so the wind noise will not leak to the outside from the outer wall 51wo through the vacuum layer. (sound leakage) is suppressed. That is, according to this dust collector 50, noise reduction is achieved by suppressing leakage of wind noise during dust collection.
Moreover, when the operation of the vacuum cleaner 1 is stopped, the inside of the outer container portion 51b of the dust cup 51 returns to atmospheric pressure. If a sound-absorbing material is sandwiched between the double walls of the dust cup as a sound insulation structure, the dust collected in the dust cup cannot be confirmed with the dust cup attached to the vacuum cleaner body, but the dust cup If it is made of transparent resin, by creating a low-pressure layer between the double walls, it is possible to both confirm the amount of dust and provide sound insulation.
In addition, the suction power of the electric blower only reduces the pressure between the double walls, and it does not create an almost vacuum like a thermos flask, so the resin used in the dust collector of conventional vacuum cleaners can be used. It can be used to form a dust cup, and the dust cup can be made lightweight.
In the present embodiment, the communication passage 52ae of the dust separation part 52 is provided between the inner packing 52ab and the outer packing 52ac at the outer peripheral part of the cup part 52a, but it A structure may be adopted in which a communication path 52ae is provided on the downstream side. With such a structure, the possibility of dust entering the outer container portion 51b can be further reduced.

After cleaning with the vacuum cleaner 1, when simply cleaning the filter body 52ca of the dust collector 50, the lever 52ef of the dust removal mechanism 52e of the dust separation section 52 is swung in the reciprocating direction as described above. As a result, the second gear 52eg, the first gear 52ec, and the shaft 52ea rotate in the reciprocating direction, thereby causing the frame 52ed and the plurality of sliding members 52ee to rotate. By rotating the plurality of sliding contact members 52ee, the plurality of sliding contact members 52ee come into sliding contact with the plurality of peaks of the pleated filter main body 52ca, thereby causing the filter main body 52ca to vibrate. Due to this vibration, dust adhering to the surface of the filter body 52ca on the cup portion 52a side is shaken off to the bottom of the cup portion 52a, and the filter body 52ca is cleaned of dust.

Moreover, the wiper 52eb rotates in the reciprocating direction by rotating the shaft 52ea in the reciprocating direction. As a result, the dust accumulated on the inclined part of the bottom of the cup part 52a is collected by the wiper 52eb into the hole 52aa in the bottom, and the dust falls from the hole 52aa into the inner cylinder part 52b, and the dust cup 51 is positioned on the bottom wall 51c. It is deposited on the convex portion 51ca.
In addition, when cleaning the dust collector 50 more clearly, remove the dust collector 50 from the suction device 10, disassemble the dust collector 50 into the dust cup 51 and the dust separating section 52, and replace the dust separating section 52 with the cup section. 52a, inner cylinder part 52b, filter part 52c, and cover part 52d, and each disassembled part can be washed with water.
In this embodiment, a canister-type vacuum cleaner has been described as an example, but other types of vacuum cleaners such as a stick-type vacuum cleaner, a handy-type vacuum cleaner, an upright-type vacuum cleaner, and a robot vacuum cleaner are also applicable. The sound insulation structure of this embodiment can also be applied to a dust collector.

(Second embodiment)
FIG. 6 is a left sectional view of the vacuum cleaner of the second embodiment, FIG. 7 is a perspective view showing the appearance of the dust collector of the second embodiment, and FIG. 8 is a vertical cross-section of the dust collector of FIG. 7. It is a diagram. In addition, in FIG. 6, arrows indicate the front, back, and top directions as seen from the user when the vacuum cleaner 101 is held horizontally. (direction) is the left-right direction, and the configuration of the vacuum cleaner 101 will be explained based on these front, back, left, right, up and down directions.

As shown in FIG. 6, the vacuum cleaner 101 of the second embodiment is a cyclone-type handy type vacuum cleaner that includes a suction device 110 that sucks dust and a dust collector 150 that is detachably attached to the suction device 110. It's a vacuum cleaner. Note that this vacuum cleaner 101 can also be used as a stick-type vacuum cleaner by connecting a suction tool to the suction device 110 via an extension tube.

The suction device 110 includes an electrical component storage section 110a containing an electric blower 112 and a battery 113, a handle section 110b provided at the rear end of the electrical component storage section 110a, and a handle section 110b that protrudes forward from the front end of the electrical component storage section 110a. It has a pipe portion 110c provided as shown in FIG.

The electrical component storage section 110a has a battery mounting section 110aa to which a battery 113 is removably mounted at the front upper part of the handle section 110b, and a dust collector 150 is provided below the pipe section 110c at the front end of the electrical component storage section 110a. It has a connection opening 110ab that can be connected to a cover portion 152b (described later) via a packing (not shown).

In the electrical component storage section 110a, a portion corresponding to the battery mounting section 110aa can be opened and closed. Further, a power receiving terminal (not shown) that can be electrically connected to a power feeding terminal of the battery 113 is provided at the front end of the battery mounting portion 110aa.
The handle portion 110b is provided with an operating portion 110d having a plurality of switches.

In the electrical component storage section 110a, an electric blower 112 is provided behind the connection opening 110ab, and an exhaust port (not shown) is provided on the right side of the electrical component storage section 110a. is discharged to the outside from the exhaust port.

The hollow pipe portion 110c can be folded into an air inlet 110ca provided at the front end, an air outlet 110cb provided at the lower rear, a lock portion 110e provided at the lower front, and a lower portion of the air inlet 110ca. It has a brush 110f provided at.
The lock portion 110e includes a locking convex portion 110ea and a biasing member 110eb (for example, a compression coil spring) that biases the locking convex portion 110ea rearward.

<About the dust collector>
As shown in FIGS. 6 to 8, the dust collector 150 is a two-stage cyclone type dust collector that includes a dust cup 151 and a dust separating section 152 that is detachable from the dust cup 151.
The dust cup 151 includes a dust collecting container section 151a having an inner dust collecting container section 151aa and an outer dust collecting container section 151ab, and an outer container section 151b provided on the outer peripheral side of the dust collecting container section 151a.

In the case of the second embodiment, the dust cup 151 includes an inner wall 151wi that forms the inner dust collecting container part 151aa of the dust collecting container part 151a, and an outer dust collecting container part 151ab of the dust collecting container part 151a together with the inner wall 151wi. It has a triple-walled structure including an intermediate wall 151wm that forms an outer container portion 151b, and an outer wall 151wo that forms an outer container portion 151b together with the intermediate wall 151wm. In the dust cup 151, the dust collecting container section 151a and the outer container section 151b have an integral bottom wall 151c.

The inner wall 151wi is formed into a cylindrical shape with a constant outer diameter.
The intermediate wall 151wm is provided with a flange-shaped open end 151em on the opposite side from the bottom wall 151c. Further, the outer diameter of the intermediate wall 151wm on the open end 151em side increases from a position higher than the intermediate position in the height direction toward the open end 151em.
The outer wall 151wo is provided with a flange-shaped open end 151eo on the opposite side from the bottom wall 151c. Further, the outer diameter of the outer wall 151wo on the open end 151eo side increases from a position higher than the intermediate position in the height direction toward the open end 151eo.
The open end 151em of the intermediate wall 151wm and the open end 151eo of the outer wall 151wo are arranged at approximately the same height, and there is a narrow gap S2 between them.

The intermediate wall 151wm and the outer wall 151wo are provided not all around the inner wall wi but only in part (see FIG. 7). Therefore, the appearance of the dust cup 151 is as if a portion of the intermediate wall 151wm and the outer wall 151wo are cut out to expose the inner wall 151wi.
Further, in the exposed portion of the inner wall 151wi, there is an inlet 151x that communicates with the inside of the inner dust collecting container portion 151aa, and a locking recess 151y that can lock with the locking convex portion 110ea of the locking portion 110e of the suction device 110. is provided.

As shown in FIGS. 6 to 8, the dust separation section 152 includes a dust separation section main body 152a that is removably fitted into the dust cup 151, and a dust separation section main body 152a that covers the dust separation section main body 152a and directs the air from which dust has been removed to the suction device 110. It has a cover part 152b for feeding.

The dust separation section main body 152a communicates with the inner cylinder part 152aa that captures dust within the inner dust collecting container part 151aa of the dust cup 151, and captures the dust within the outer container part 151ab of the dust cup 151. a plurality of small centrifugal separators 152ab, a branch channel forming section 152ac that communicates and connects the inner cylinder section 152aa and the plurality of small centrifuge sections 152ab, and an air flow merging section 152ad connected to the branch channel forming section 152ac. and a filter section 152ae attached to the airflow merging section 152ad.

The inner cylinder part 152aa is formed in the shape of a cylindrical frame, and a mesh part (not shown) is wound around the outer circumference of the inner cylinder part 152aa.
The branch flow path forming part 152ac is a hollow disc-shaped component, and has a central opening opening toward the inner cylinder part 152aa at its center position, and an inner cylinder part around the central opening. 152aa are removably connected. Further, the branch channel forming section 152ac has a plurality of peripheral openings around the central opening, and a plurality of small centrifugal separation sections 152ab are connected to the plurality of peripheral openings.

Further, the branch flow path forming part 152ac has a plurality of small outer cylinder parts 152aca that communicate with a plurality of surrounding openings, and a plurality of small inner cylinders provided in the plurality of small outer cylinder parts 152aca. 152acb. Further, in the airflow merging portion 152ad, the plurality of small outer cylinder portions 152aca and the central opening communicate with each other, and the plurality of small inner cylinder portions 152acb communicate with the inside of the airflow merging portion 152ad.

Furthermore, the branch flow path forming portion 152ac is provided with a flange 152acc on its outer periphery, and has an annular inner packing 152acd and an annular outer packing 152ace held by the flange 152ac.
Moreover, one or more through-hole-shaped communication passages 152acf are formed between the inner packing 152acd and the outer packing 152ace in the flange 152acc.

In a state where the branch flow path forming section 152ac configured in this way is attached to the dust cup 151, the plurality of small centrifugal separation sections 152ab are fitted into the opening of the outer dust collecting container section 151ab, and also serve as inner contact sections. The inner packing 152acd and the outer packing 152ace as an outer contact portion abut against the open end 151em of the outer dust collection container portion 151ab and the open end 151eo of the outer container portion 151b. Thereby, the space between the branch flow path forming part 152ac and the dust cup 151 is cut off from the outside air, and the inside of the outer dust collecting container part 151ab and the inside of the outer container part 151b are hermetically cut off.

The airflow merging section 152ad has an air outlet 152ada into which the filter section 152ae is fitted.
The filter portion 152ae includes a pleated filter body 152aea and an annular packing 152aeb provided on the outer periphery of the filter body 152aea. The filter portion 152ae is fitted into the air outlet 152ada of the air flow merging portion 152ad, so that the packing 152aeb comes into contact with the periphery of the air outlet 152ada on the outer surface of the air flow merging portion 152ad.

The cover part 152b is formed in a size that fits into the flange 152acc of the dust separation part main body 152a of the dust separation part 152 and the open end part 151eo of the dust cup 151.
Further, the cover part 152b has an opening part 152ba that exposes the filter part 152ae, and the area around the opening part 152ba on the inner surface of the cover part 152b serves as an encircling contact part that can come into contact with the packing 152aeb of the filter part 152ae. An annular rib 152bb is provided.
Furthermore, a through-hole-shaped communicating path 152bba is provided at one or more locations of the rib 152bb. In the case of the present embodiment, the outer peripheral part of the filter main body 152aea of the filter part 152ae can come into contact with the inner surface of the cover part 152b. A communication path 152aex in the form of a through hole is also provided.

The dust collecting device 150 configured in this manner is mounted with the exposed portion of the inner dust collecting container portion 151aa facing the pipe portion 110c of the suction device 110. In the attached state, the locking convex portion 110ea fits into the locking recess 151y of the dust cup 151 due to the urging force of the urging member 110eb in the lock portion 110e of the pipe portion 110c, and the cover portion 152b of the dust collector 150 is sucked. Press toward the connection opening 110ab side of the device 110. Further, the inlet 151x of the dust cup 151 and the air outlet 110cb of the pipe portion 110c are airtightly connected via a packing (not shown).

By driving the suction device 110 of the vacuum cleaner 101 configured in this way, air flows as shown by the bold line arrows in FIGS. 6 and 8.
Specifically, the air containing dust that has flowed into the air inlet 110ca of the suction device 110 passes through the pipe portion 110c and flows into the inlet 151x (see FIG. 7) of the dust collector 150 from the air outlet 110cb. and is sent into the inner dust collection container section 151aa of the dust cup 151. Among the dust that has flowed into the inner dust collecting container part 151aa, a part of the relatively large first dust swirls inside the inner dust collecting container part 151aa, is separated, and accumulates at the lower part of the inner dust collecting container part 151aa. The remaining first dust is captured by a mesh portion (not shown) of the inner cylinder portion 152aa. The second dust, which is smaller than the first dust, passes through the mesh part together with air, flows into the branch flow path forming part 152ac from the inside of the inner cylinder part 152aa, and flows into the branch flow path forming part 152ac at a plurality of small outsides in the branch flow path forming part 152ac. It is sent from the cylindrical part 152aca into a plurality of small centrifugal separation parts 152ab.

The second dust swirls within the plurality of small centrifugal separation sections 152ab, is centrifuged from the air, and is deposited in the outer dust collection container section 151ab of the dust cup 151. The air from which the second dust has been removed flows from the plurality of small centrifugal separation sections 152ab through the plurality of small internal cylinder sections 152acb into the airflow confluence section 152ad, and the second dust particles smaller than the second dust are contained in the air. When the third dust is included, the third dust is captured by the filter main body 152aea. The air from which the third dust has been removed passes through the filter main body 152aea, flows into the electrical parts storage section 110a from the connection opening 110ab of the suction device 110, passes through the electric blower 112, and then passes through the exhaust port (not shown). is discharged to the outside.

During such dust collection, the air in the outer container part 151b of the dust cup 151 passes through the communication path 152acf provided in the flange 152ac of the dust separation part main body 152a of the dust separation part 152 from the gap S2 to the cover part 152b. and the dust separation part body 152a, and flows into the connection opening of the suction device 110 through the communication path 152bba of the rib 152bb of the cover part 152b and the communication path 152aex of the outer periphery of the filter part 152ae. 110ab flows into the electrical component storage section 110a, passes through the electric blower 112, and is discharged to the outside from an exhaust port (not shown). As a result, the pressure inside the outer container portion 151b of the dust cup 151 is lower than atmospheric pressure (pressure close to vacuum). In other words, a low pressure layer (near vacuum layer) is formed within the outer container portion 151b.

Therefore, even if wind noise is generated inside the inner dust collection container part 151aa and the outer dust collection container 151ab of the dust cup 151 during dust collection, the low pressure layer (near vacuum layer) serves as a sound insulating layer, so the wind noise is reduced to a low pressure. Leakage (sound leakage) to the outside from the outer wall 151wo via the layer (near vacuum layer) is suppressed. That is, according to this dust collector 150, noise reduction is achieved by suppressing leakage of wind noise during dust collection.

After cleaning with the vacuum cleaner 101, the dust collector 150 can be easily removed by moving it forward with respect to the suction device 110, and the dust collector 150 can be disassembled into the dust cup 151 and the dust separating section 152. The dust in the dust cup 151 can be discarded. Further, the dust separation section 152 can be disassembled into the dust separation section main body 152a, the filter section 152ae, and the cover section 152b, and each disassembled part of the dust cup 151 and the dust separation section 152 can be washed with water.
Although this embodiment has been explained using a hand-held vacuum cleaner as an example, the dust collection device of other types of vacuum cleaners such as a canister-type vacuum cleaner, an upright-type vacuum cleaner, and a robot vacuum cleaner can also be used. The sound insulation structure of this embodiment is applicable.

(Third embodiment)
In the dust collector 50 of the first embodiment (see FIGS. 1 to 5), the bottom wall 51c of the dust cup 51 may be made openable and closable. In this case, it is preferable that only the portion of the bottom wall 51c corresponding to the dust collecting container portion 51a can be opened and closed, but the portion corresponding to both the dust collecting container portion 51a and the outer container portion 51b can be opened and closed. Good too.
Furthermore, in the dust collector 150 of the second embodiment (see FIGS. 6 to 8), the bottom wall 151c of the dust cup 151 may be made openable and closable. In this case, it is preferable that only the portions of the bottom wall 151c corresponding to the inner dust collecting container portion 151aa and the outer dust collecting container portion 151ab can be opened and closed.

(Fourth embodiment)
In the first to third embodiments, the structure forms a low pressure layer (near vacuum layer) inside the outer container by sucking out the air inside the outer container of the dust cup of the dust collector when the vacuum cleaner is operated. However, the dust cup may be sealed in a state where the inside of the outer container part is kept at low pressure (near vacuum). In this case, the inside of the outer container section is always in a low pressure (near vacuum) state. As a result, the suction power of the electric blower of the vacuum cleaner can be concentrated on sucking in dust, thereby improving efficiency and reducing noise by suppressing leakage of wind noise during dust collection.

(summary)
The dust collector for a vacuum cleaner of the present invention is a dust collector that is detachably attached to a suction device that sucks dust and captures the sucked dust, and includes:
It has a dust cup and a dust separation part that is detachable from the dust cup,
The dust cup has a dust collecting container section that collects the sent dust, and an outer container section provided on the outer peripheral side of the dust collecting container section,
The dust sent into the dust collection container section is separated from air by the dust separation section, and the air from which the dust has been removed is sent to the suction device, and the air in the outer container section of the dust cup is sent to the suction device. It is configured to be sent.
According to this configuration, during cleaning when the suction device is driven, the air inside the outer container of the dust cup is sucked into the suction device, so the inside of the outer container has a low pressure lower than atmospheric pressure (pressure close to vacuum). layer (near vacuum layer). Therefore, the wind noise generated when dust and air flow into the dust collection container leaks out from the outer peripheral surface of the dust cup due to the low pressure layer (near vacuum layer) that exists on the outer periphery of the dust collection container. (Sound leakage) is suppressed, and the dust collector becomes quieter. This dust collector is suitable for a cyclone type dust collector, particularly a dust collector that is attached to a suction device so as to be exposed to the outside, or in other words, a dust collector that is not housed inside the suction device.

The vacuum cleaner dust collector of the present invention may be configured as follows, and these may be combined as appropriate.

- The dust separation section includes a ventilation path that communicates with the inside of the dust collection container section of the dust cup so as to allow air to pass through, and a communication path that connects the inside of the outer container section of the dust cup and the ventilation path. and has
It may be configured such that when the suction device is driven, the inside of the ventilation passage becomes a negative pressure, so that air in the outer container part flows into the ventilation passage via the communication passage.
According to this configuration, it is possible to simplify the structure in which the air in the outer container part flows into the ventilation path via the communication path by creating a negative pressure in the ventilation path.

- The dust cup has a double wall structure including an inner wall that constitutes the dust collecting container section and an outer wall that constitutes the outer container section together with the inner wall,
The inside of the outer container portion may be a space between the inner wall and the outer wall.
According to this configuration, it is possible to obtain a one-stage cyclone type dust collector that is quiet.

- The dust separation section includes a cup section that is removably fitted into the dust cup, a filter section provided in the cup section, and a cover section that covers the filter section and sends air from which dust has been removed to the suction device. has
The cup portion includes an inner contact portion that makes airtight contact with the open end of the inner wall when fitted into the dust cup, and an inner contact portion that makes airtight contact with the open end of the outer wall when fitted into the dust cup. and an outer contact portion that comes into contact with the
The ventilation path includes the inside of the cup portion,
The communicating path may be a through hole provided between the inner abutting portion and the outer abutting portion of the cup portion and communicating with the ventilation path.
According to this configuration, in a one-stage cyclone type dust collector, the structure in which the air inside the outer container part flows into the ventilation path via the communication path due to the negative pressure inside the ventilation path can be simplified. .

- The dust collecting container part has an inner dust collecting container part and an outer dust collecting container part provided on the outer peripheral side of the inner dust collecting container part,
The dust cup includes an inner wall forming the inner dust collecting container portion, an intermediate wall forming the outer dust collecting container portion together with the inner wall, and an outer wall forming the outer container portion together with the intermediate wall. Equipped with a triple wall structure,
The interior of the outer container portion may be a space between the intermediate wall and the outer wall.
According to this configuration, a quiet two-stage cyclone type dust collector can be obtained.

- The dust separation section has a dust separation section main body that is removably fitted into the dust cup, and a cover section that covers the dust separation section main body and sends air from which dust has been removed to the suction device,
The dust separation unit main body includes an inner cylinder part that captures dust within the inner dust collection container part, a plurality of small centrifugal separators that communicate with the inner cylinder part and capture dust within the outer container part, and an air flow confluence section that communicates with the small centrifugal separation section; an air outlet provided in the air flow confluence section; and an inner abutment that airtightly abuts the open end of the intermediate wall when fitted into the dust cup. and an outer abutment part that airtightly abuts the open end of the outer wall when fitted into the dust cup,
The cover part has an enclosing abutting part that airtightly abuts the dust separation part main body so as to surround the air outlet;
The ventilation passage includes a space between the dust separation part main body and the cover part inside the surrounding abutment part,
The communication path includes a first through hole provided between the inner abutting portion and the outer abutting portion of the cup portion, a second through hole provided in the surrounding abutting portion, and the cover. It may include a space between the first through hole and the second through hole within the portion.
According to this configuration, in a two-stage cyclone type dust collector, the structure in which the air inside the outer container part flows into the ventilation path via the communication path due to the negative pressure inside the ventilation path can be simplified. .

- The bottom portion of the dust cup may be configured to be openable and closable.
According to this configuration, the dust accumulated inside can be exhausted by opening the bottom of the dust collection container, which is convenient.

Preferred embodiments of the invention include combinations of any of the above-mentioned embodiments.
In addition to the embodiments described above, there may be various modifications of this invention. Such variations are not to be construed as falling outside the scope of this invention. This invention should include the meaning equivalent to the scope of the claims and all modifications within the said scope.

1: Vacuum cleaner, 10: Suction device, 11: Housing, 11a: Connection section, 11b: Placement section, 11c: Electric blower storage section, 11d: Cord reel storage section, 11e: Exhaust port, 12: Electric blower , 13: cord reel, 21: flexible hose, 50: dust collector, 51: dust cup, 51a: dust collection container section, 51ab: inner receiving section, 51ac: open end section, 51b: outer container section, 51bb : outer receiving part, 51bc: opening end, 51c: bottom wall, 51ca: positioning convex part, 51wi: inner wall, 51wo: outer wall, 51x: inlet, 52: dust separation part, 52a: cup part, 52aa: hole, 52ab: inner packing, 52ac: outer packing, 52ad: receiving section, 52ae: communicating path, 52b: inner cylinder section, 52ba: cylindrical frame section, 52bb: large diameter flange section, 52bc: small diameter cylinder section, 52c: filter Part, 52ca: Filter body, 52cb: Packing, 52d: Cover part, 52da: Cover body, 52daa: Discharge port, 52dab: Rib, 52db: Handle, 52e: Dust removal mechanism, 52ea: Shaft, 52eb: Wiper, 52ec: No. 1 gear, 52ed: frame body, 52ee: sliding member, 52ef: lever, 52eg: second gear, 53: hook lever, 101: vacuum cleaner, 110: suction device, 110a: electrical parts storage section, 110aa: battery Mounting part, 110ab: Connection opening, 110b: Handle part, 110c: Pipe part, 110ca: Air inlet, 110cb: Air outlet, 110d: Operation part, 110e: Lock part, 110ea: Locking convex part, 110eb: biasing member, 110f: brush, 112: electric blower, 113: battery, 150 dust collector, 151: dust cup, 151a: dust collection container section, 151aa: inner dust collection container section, 151ab: outer dust collection container section, 151b: outer container part, 151c: bottom wall, 151em: open end, 151eo: open end, 151wi: inner wall, 151wm: intermediate wall, 151wo: outer wall, 151x: inlet, 151y: locking recess, 152 : Dust separation part, 152a: Dust separation part main body, 152aa: Inner cylinder part, 152ab: Small centrifugal separation part, 152ac: Branch channel forming part, 152aca: Small outer cylinder part, 152acb: Small inner cylinder part, 152acc: Flange , 152acd: Inner packing, 152ace: Outer packing, 152acf: Communication path, 152ad: Air flow merging section, 152ada: Air outlet, 152ae: Filter section, 152aea: Filter body, 152aeb: Packing, 152aex: Communication path, 152b: Cover part, 152ba: opening, 152bb: rib, 152bba: communication path, S1: gap, S2: gap, W: width

Claims (8)

A dust collector that is detachably attached to a suction device that sucks dust and captures the sucked dust,
It has a dust cup and a dust separation part that is detachable from the dust cup,
The dust cup has a dust collecting container section that collects the sent dust, and an outer container section provided on the outer peripheral side of the dust collecting container section,
At least when the suction device is suctioning, the inside of the outer container is in a low pressure state lower than atmospheric pressure,
The dust sent into the dust collection container section is separated from air by the dust separation section, and the air from which the dust has been removed is sent to the suction device, and the dust from the dust separation section is transferred into the outer container section of the dust cup. A dust collecting device for a vacuum cleaner, characterized in that it is configured to send air within the outer container portion to the suction device without allowing air to flow in . The dust separating section includes a ventilation passage that communicates with the inside of the dust collection container part of the dust cup to allow air to pass therethrough, and a communication passage that makes the inside of the outer container part of the dust cup and the ventilation passage communicate with each other. has
The dust collector according to claim 1 , wherein the air in the outer container section is configured to flow into the ventilation path via the communication path by creating a negative pressure in the ventilation path when the suction device is driven. . The dust cup has a double wall structure including an inner wall forming the dust collecting container portion and an outer wall forming the outer container portion together with the inner wall,
The dust collector according to claim 2 , wherein the inside of the outer container section is a space between the inner wall and the outer wall. The dust separation section includes a cup section that is removably fitted into the dust cup, a filter section provided in the cup section, and a cover section that covers the filter section and sends air from which dust has been removed to the suction device. have,
The cup portion includes an inner contact portion that makes airtight contact with the open end of the inner wall when fitted into the dust cup, and an inner contact portion that makes airtight contact with the open end of the outer wall when fitted into the dust cup. and an outer contact portion that comes into contact with the
The ventilation path includes the inside of the cup portion,
The dust collector for a vacuum cleaner according to claim 3 , wherein the communication path is a through hole provided between the inner abutting portion and the outer abutting portion of the cup portion and communicating with the ventilation path. . The dust collecting container part has an inner dust collecting container part and an outer dust collecting container part provided on the outer peripheral side of the inner dust collecting container part,
The dust cup includes an inner wall forming the inner dust collecting container portion, an intermediate wall forming the outer dust collecting container portion together with the inner wall, and an outer wall forming the outer container portion together with the intermediate wall. Equipped with a triple wall structure,
The dust collector according to claim 2 , wherein the inside of the outer container section is a space between the intermediate wall and the outer wall. The dust separation section has a dust separation section main body that is removably fitted into the dust cup, and a cover section that covers the dust separation section main body and sends air from which dust has been removed to the suction device,
The dust separation unit main body includes an inner cylinder part that captures dust within the inner dust collection container part, a plurality of small centrifugal separators that communicate with the inner cylinder part and capture dust within the outer container part, and an air flow confluence section that communicates with the small centrifugal separation section; an air outlet provided in the air flow confluence section; and an inner abutment that airtightly abuts the open end of the intermediate wall when fitted into the dust cup. and an outer abutment part that airtightly abuts the open end of the outer wall when fitted into the dust cup,
The cover part has an enclosing abutting part that airtightly abuts the dust separation part main body so as to surround the air outlet;
The ventilation passage includes a space between the dust separation part main body and the cover part inside the surrounding abutment part,
The communication path includes a first through hole provided between the inner abutting part and the outer abutting part in the dust separation part main body , and a second through hole provided in the surrounding abutting part. The dust collector according to claim 5 , further comprising a space between the first through hole and the second through hole in the cover part. The dust collector according to any one of claims 1 to 6 , wherein the bottom portion of the dust cup is configured to be openable and closable. A vacuum cleaner comprising: a suction device that sucks dust; and the dust collector according to claim 1 , which is detachably attached to the suction device.

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